eastern time tonight on most pbs stations. also tonight on pbs, "guns in america" explores the country's enduring relationship with firearms, beginning with the first european settlers to present day. check your local listings. and on our web site, we examine the gun depicted in art, from movies like "dirty harry" to paintings and photographs. find a narrated slideshow on art beat. >> ifill: we return now to south africa, where double amputee olympian oscar pistorius appeared in court today, and the family of girlfriend reeva steenkamp gathered for her funeral. >> reporter: his father, as he listened to the charges against him that he shot his girlfriend dead in an act of premeditated murder he sobbed. exactly what happened in his high security gated home late on the night of st. valentine last week did oscar pistorius kill his girlfriend reeva steenkamp? yes, his lawyer would concede. but he argued that was mistake. the explanation came by way of a prepared statement read to the court by his lawyer. pistorius claims the coupl